Thank you for looking. I am a NEW HPT owner (48h now) I have done my first tune and have managed to solve several issues that 2 before me haven't. Yes--this is the third time this VIN has been liscensed in this car. If you have suggestions on my tune file I am more than willing to accept them. This is a 1998 LS1 in a 1968 Firebird, 4l60 on fresh rebuild with am increased stall convertor (don't know exact spec), 411 PCM swap, mid length headers, 2.5" exhaust, Stock TB and intake. I am an old grandpa who cruises with grandma, but occasionally like to remember what it was like being 18. I am looking for a modern production car ride, that will perform when I want it to. This tune comes close to what I am looking for, but most certainly is needs improvement.
The reason for this post------
I have an intermittent idle issue. It seems to drop a cylinder at random intervals, in gear, at idle. As far as I can tell this is the only time I notice any issue. I have checked wiring, replaced O2s, swapped coils, swapped injectors, pretty much eliminated everything but programming (I think)
I have posted my latest tune, a driving log, and an idling in-gear log.
Your help is GREATLY appreciated. Thank you
68 Firebird-Final.hpt
post-tune.hpl
Idle Issue.hpl